The most expensive part in this assembly is the Arm,swing.
The twenty-five Kx80-c2 Kx80 1982 Usa Canada Swing Arm ('81 Kx80-c1) component parts are all listed in this schematic.
The most reasonably priced component used on the Kx80-c2 Kx80 1982 Usa Canada Swing Arm ('81 Kx80-c1) is the Washer-spring,6mm.